Mixing or agitating device



July l2, 1932. c. L. wlLLARD 1,866,688

MIXING OR AGITATING DEVICE FiledNov. 25, 1928 2 Sheets-Sheer. 1

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1f-r Le A TTORNE Y.

july 12 l932- c. L. wlLLARD 1,355,688

MIXING OR AGITATING DEVICEr Filed Nov. 25, 1928 2 Sheets-Sheet 2 1 N VEN TOR.

@Wb/@ZM BY @y A TTORNE Y.

CARL L. WILLADVOF Patented July 12, 1932 UNITED* STATES inserer 'minne eeeeijmmnve envien Appunti-en ined 'itevembei-"aa, 192s. -fse'rii in. 3mes..

This invention relates zto agitating `or m`iX= gates during transportation; to enable the supplying of a liquid to thedry batch when carried, te venable the aggregate te Vbemixed near its point of use afterv being transported to the point of liquid application in 'a .dry

The-invention lis furtlierdesignedte rotate at thew'ill of the operator and provided with mixing er egitating blades designed te agitete `'er mix the .materiel on the .votati-en ef i the cylinder and to .convey itjte one end ef the cylinder containing 'adisehergeopening when the cylinder is rotating in apred'eter'- mined direction.

The invention also afford-ege streture f wherein the cylinder may be'rot'ated in'either of two directions from epoint ofre'st, te er ford aqui'ck, ellicientg uniform and'economiL c al finterrnixing of the aggregate. In addivtion te the above objects and advantages; thel Si)v invention affords a structure V`vv.l1ei`"`ein a single chute` adjustable for different positions serves to-deliver materialfinto the cylinder and` to convey Inaterialthere'frornx Y In accomqilishing the above objects7 the in` vention` is designed so that the cylinder ,re-J mains in substantially horizontal'positionj during all operationsa and isnot:tipped'orY inclined' rearwardly infin-gehe material .die Charging operation. 1

novel 'construction and combination of-parts hereinafter described, illustratedfin ytheY ac; companying drawings, and pointed out inthe claimshereto appended; it being understood:V

that various 'changes in the form-,lV proportion,l size and rniner details of construction 'withiin the seepe of the claims'rn'aybe' resorted to without departingffrom the spirit or sacri-Vk ficing any of the advantages'oi` kthe invention'.

Y :To more clearlycornprchend the invention, reference is rdirected to the accompanying drawings, whereine;

Fig. -l is a view inside 'elevationof one bodiment-oftheinvention. F is a ver-A tical section onl line 2;-2 of Fig. l. d Fig. 3 lis a view in'detai-l of the-cylinder illiis-trating" the 'spiral 'conveyer therein. Fig. 4 is a -vfragmentary View of a cylinder having a `conical-Y endinto which extend the trough shaped blades; Fig 5V is a; view in detail-:ef:one of theblades inFig. 4. Fig; 6 -is a longitudis LYNWO), AIQIFOItNgAssIGNoR'To TRANSIT Mixims inea, p n-:ConyonATIoN or NEVADA i i Y heV nal sectional view of la cylinder, having n. plu; j

rality "ofy concentri'cally arranged 'spiral 'corr-- veyers therein, pitched linopposite d-irections.`

AIn the drawings,- wherein'likechaiacters of reference designate corresponding parts,'f-"1 indicates a vehicle chassis 'driven by the power plant beneath the heed 2, which transmits .te

wheels 3 'through transmissionvll. Qn the supplemental frame 5 resting on main frame 6 is a mixing cylinder 7 mountedto rotate `on a'horizo'ntal axis in the cradles 8, the latter being provided with anti-friction cylinderz supporting rollers v9.. The rear endvvll 'lo of the cylinder 7 is provided centrally y with an opening ll controlled by a gate closure 125` and the forward end wall is provided with an opening through which extends the valve controlled pipe13 leading from water tanks 14 carried by the cradles 8V.

The cylinder 7 carries a ring gear -lw-ith which engages a pinion 16 on a sllft 17.*ei tended from power tale=oli` ;lv8, of any well' known typ'ei associated with the transmission. gear bof; 1.9. The power take-noli' is-'of that tyne'canable of driving th'ershaftin .either of two directions,v or permitting the saine "to rernain idle when desired.` The'seleetive "op:y V`VVith the above mentioned and otherobe jects in view, the invention :consists .in the eration of `the power take-olf is controlled bythe operation of a shaft lever 20 connected with leverlto move thesarne from N (neulfv trelp'os'ition) to either R (right) or L (left) drive position.

ne -v me o rection, agitation taking place during both operations.

To discharge the mixed aggregate from the cylinder while the cylinder remains in a substantially horizontal position, and is rotated to cause the conveying of the material toward the rear end wall 10, I provide a trough or chute 23 mounted to pivot on a horizontal axis between the free ends of arms 24 pivotally mounted at corresponding ends tothe cradle frames. A member 25 extending upwardly alongside of cylinder V7 isprovided with arm supporting stops 26 for supporting the arms 24 in either of three positionstindicated at -B-C-Fig. 1. A spring held chute in'position E, the chute being inclinedV downwardly into thev opening 11 ywith its end extended thereinto. To convey the mixture from the cylinder Vwhile the sameis in a substantially horizontal position, it is. iirst necessary to operate the power take-oit to rotate the cylinder so thatworm 22 conveys the material toward the rear end of thecylinder. During this operation, the arms 24 are moved to position C and chute 23v is adjusted to position F, the same assuming a downward inclination from the rear of the'cyiinder, ywith the inner end'of the chute extended a1 distance intotheopening to receive the material as 1t is picked vup by screw 22 and drops vertically therefrom across the opening. Y ,ltr will -be apparent that the discharge of the material from the cylinder is "accomplishedwhile the same is in a substantially horizontalposition and 'without inclining the same rearwardly; also that the cylinder is rotated in either or both of two directions duringthe agitating or mixing of the material; also that the chute is movable to afford a means for filling the cylinder as well as removing material therefrom. f c

:In the Fig. 4 disclosure, the end of the cylinder 7 is of conical formation provided with an opening 29 adaptable for closing byv a removable cover 30. The spiral conveyer on the interior of the cylinder terminates adjacent to the opening 29 in relatively deep wide trough shaped blades 3l, disposed at a suii- `cient angle that when the cylinder is rotating in discharger direction, the aggregate picked up by said blades will slide longitudinaliy thereof and discharge from the cylinder through the opening 29when the cover 30 isremoved. This type of structure enables the trough shaped blades to discharge the material through the opening and clear of the mixer automatically and while the cylinder is in horizontal position. However, if it is so desired, the chute 23 or similar structure mayV be provided to convey the discharged aggregate to anysuitable point.

The cylinder may be constructed with a plurality of nspiral conveyers 32 and 33,

pitched iii-opposite-directions and arranged' conveys it in another direction. Thus the aggregate is moving ina plurality of direc-y tions longitudinally of the cylinder, regard less of its direction of rotation, and when the cylinder is rotating in a direction for the lspiral to convey the aggregate toward the discharge opening, this movement will be` readily accomplished. The conveying of the-` aggregate from the Adischarge opening will gradually reduce thev volume thereof within the cylinder until its level will be at afpoint below the actionof. the conv'eyer 32.

l. A mixing device comprising a horizontal rotatable cylinder provided vwith a discharge opening atI one Yend, a closure for said opening, a plurality of spiral conveyers pitched in opposite directions and arranged concentrically of each other within the cylinder, means for rotating the cylinder in` either of two directions to cause the conveyers to move 4the material in continuousv layers travelling reversely to each other to and from said discharge openingdepending on they direction of rotation of the cylinder and while` the cylinder is in substantially horizontal position, and means for cooperating with the discharge opening for directing material therefrom, dependenton the direction of rotation of the'cylinder.y 1

2.v A mixing'device comprising a horizon-` tal rotatable cylinder'provided withV a discharge opening at one end, a closure for said opening, a plurality ofV spiral conveyers pitched in opposite directions and arranged concentricallyof each otherwithin the cyl-Y inder,^means for rotating the cylinder in` either of two directions `to "cause the conveyers to move the material in continuous Alayers' travelling reversely to each other to and from'isaiddischarge opening' depending on-V the direction ofV rotation of the cylinder and Vwhile .the cylinderis in substantially horizontal position, and meansffor cooperating with f, 5 the discharge'opening for removing material fromthe cylinder ona rotation of the cylinder in a direction to causeone of the conveyers to convey the'materialtowardsaid.-

discharge opening. y

3. The combination in a transit mixer, of a rotatable cylinder provided with a filling and discharge opening at one end, a closure for said opening, a plurality of spiral con-A veyers pitched in opposite directions and are ranged concentrically of each other within the cylinder, and power means forl rotating the cylinderin either of two directions to cause the conveyers to move the material in continuous layers travelling reversely to each Y other from end to end of the cylinder. n

4. The combination in a transit mixer, of a rotatable cylinder provided with a filling and discharge opening at one end, a closurev for said opening, a plurality of spiral conveyers pitched in opposite directions and arranged concentrically of each other within the cylinder, a propelling power plant, and a power take-0H means associated with the propelling power plant for operation to rotate the cylinder in either of two directions to cause the conveyers to move the material in continuous layers travelling reversely to each other from end to end of the cylinder.

the cylinder, means associated with the cylin der for conveying the material therefrom on its rotation in one of two directions, and means for rotating the cylinder in either of two directions to cause the conveyers to move the material in continuous layers travelling reversely to each other from end to end of the cylinder.

6. The combination in a transit mixer, of a rotatable cylinder provided with a filling and discharge opening at one end, a closure for said opening, a plurality of spiral conveyers pitched in opposite directions and arranged concentrically of each other lwithin the cylinder, power means for rotating the cylinder to cause the conveyers to move the material in continuous layers traveling reversely to each other from end to end of the cylinder and finally to cause one of the con,-` veycrs to convey the materia-l therein toward said filling and discharge opening while the cylinder is in substantially horizontal position, and means movable into and out of said openingV for receiving the Vmaterial so conveyed and for discharging 1t from the cylinder.

7. A mixing apparatus comprising a horizontal rotatable cylinder provided at one end in alignment with its axis of rotation with a discharge opening, a closure for said openi ranged 'concentrical'lyoff-each other within the cylinder' for movingl the material in yconti-nuous layers travelling 1 reverselyq to 'each the cylinder throughsaid discharge opening for conveyingv material from `the cylinder While the same is rotating in a substantially horizontal position.` M y 8. A mixing device comprising a non-tiltable cylinder disposed in a substantially horizontal plane mounted for axialrotation and provided with a discharge openingat one end, a removable closure for said open-v eoi ing, a plurality of spiral'conveyersl mounted y interiorly of the cylinder to rotate therewith,

said spiral conveyers being pitched in opposite directions and arranged concentrically of each other, means for rotating the cylinder to cause the conveyers to move the material therein in continuous layers alternate# ly towards opposite ends of said cylinder and to discharge the material from said openingV on the removal of the closure therefrom.

9. A concrete mixing apparatus comprising a horizontally disposed elongated axially rotatable cylinder provided at one end with a discharge opening, a plurality of spiral conveyers concentrically disposed longitudinally within the cylinder to rotate therewith, said conveyers pitched in relatively opposite directions longitudinally of the cylinder'and extending from end to end thereof, and means for rotating the cylinder in either zof two directions to cause the conveyers to move the material in continuous layers travelling reversely to each other from end to end `of the cylinder.V Y

l0. A mixing apparatus comprising a rotatable cylinder, a series of Spiral conveyers concentrically disposed longitudinally within the cylinder to rotate therewith, said conveyers pitched in Vrelatively opposite directions longitudinally of the cylinder, and means to rotate the latter to cause the conveyers to move the material in continuous layers travelling reversely to each other from end to end of the cylinder.

11. A mixing apparatus comprising a ro-l tatable cylinder, a series of continuous spirall blades longitudinally disposed within the cylinder andrigidly secured to the walls thereof, a reversely pitched series of continuous spiral blades longitudinally disposed within said rst-mentioned series in rigid concentric relation thereto, one of said series adapted to longitudinally and continuously kmove the material in the cylinder in one direc-tion and the other series adapted to longi- 4 1,866,6est

tudn'ally and Continuously move the material n'an opposite direction using the reverlsely moving material as a floor, and means for rotating the cylinder. In vtestimony whereof I have signedmy name to this specification.

CARL L WILLARD.

eo.. Y 

